IdPs are encouraged to release the essential attribute bundle to the broadest class of SPs possible, subject to policy.
Identifier
eduPersonPrincipalName
Mail attribute
mail
Person name attributes
displayName
givenName
sn (surname)
If your deployment of eduPersonPrincipalName is non-reassigned, and your IdP releases the essential attribute bundle to all SPs, then your IdP supports the Research & Scholarship Category by definition.